Flush carbon cartridge with tap water for a minimum of five minutes before use.

Plumbing Hookup

Attach inlet for source water to chlorinated or well water supply (white tube). NOTE: To attach directly to your faucet, attach the faucet adaptor to the inlet for source water.

Route wastewater outlet line to drain (red line).

Route purified water outlet line to storage container (blue line).

Make sure all plumbing fittings and membrane housing caps are screwed down tight. NOTE: Discard the first 10 gallons of water produced (for Pure-Flo with RO pump, be sure to plug in pump).

Prefilter Maintenance
Proper maintenance is necessary to extend the life of the membrane and the quality of the water produced. The prefilters should be replaced every six months or 3000 gallons of production, whichever occurs first. This replacement schedule is very important; however, the quality of your source water can extend or shorten the effective life of the prefilters. In locations with extremely poor quality source water, it may be necessary to replace prefilters as often as once a month. If particulates are forced through a fouled prefilter, the membrane can be damaged. If the carbon prefilter is not replaced periodically, chlorine and organic will be present in the purified water.

Membrane Maintenance
With proper use and maintenance, the membrane should last a minimum of one year. Following the suggestions below should ensure the life of the membrane.

The membrane should never be stored dry.

The membrane can be stored by being saturated in the RO system for up to 30 days.

If the membrane is not used for more than 30 days, it can be refrigerated for preservation. To refrigerate, place the membrane in a resealable bag with a couple of teaspoon of purified water and store in refrigerator, being careful not to freeze the membrane.

Membrane efficiency and life expectancy may be improved by flushing the membrane regularly. The easiest way to achieve this is to switch the two outlet fittings on the bottom of the membrane housing. By placing the wastewater fitting (red tube) in the purified water outlet and the purified water fitting (blue tube) in the wastewater outlet, the system can be flushed. After switching the fittings, the unit should be operated for approximately 15 minutes. After flushing the unit, be sure to use Teflon tape on the pipe threads when reinstalling the fittings in the appropriate outlets. Regular flushing (every 6 months or 1000 gallons) will decrease mineral buildup on the membrane. This is most important with source water with very high hardness and high total dissolved solids.

Clean, pure water is a priority for all fish and plants. No equipment is more effective in helping create ideal water conditions as Reverse Osmosis units. Use the following chart to help you choose the best RO Unit for your aquarium system.

You may think your tap water is perfect because it looks clear, tastes good, and is odor-free. But you cannot see, taste, or smell all of the minerals, bacteria, nutrients, and chemicals present in your water. Learn how an RO Unit will help.

Please note: If you wish to ship items with this symbol by express service, additional shipping charges will apply during checkout.

Please note: Return of electrical equipment to Drs. Foster & Smith for exchange or refund is limited to 60 days from the date of purchase. Beyond 60 days, please contact the manufacturer for repair or replacement as covered by the manufacturer's warranty.

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Pure-Flo II RO Units 24 gpd 3-stage
3.6
5
36
36

speedy water output!
This pump is amazing it puts out amazing water flow in a quick amount of time.
March 24, 2014

Great for small water changes
This unit works great. The first 20-30 gallons will be very very slow but once it breaks in it will produce more then its rated at. This is my first ro system and I give it two thumbs up.
November 26, 2013

Great product
I got the 24 gpd 4 stage unit to make dilution water for home brewing. I thought it would do 24 gallons per 24 hour day, but it's more like 24 gallons per 8 hour day. Way more than I need. It's just stoopid-easy to use and it works great. A water analysis showed a tiny amount of bicarbonate (6 ppm), but nothing else. I hang mine on screws on an outside wall, hook it to an outside tap, collect RO/DI water in a bucket and just let the waste spill onto the patio. When done, disconnect, take it inside and hang it there for storage (wouldn't want it to freeze!) Other than a correctable problem with the membrane seal the first time I installed it, it's been problem free and has greatly exceeded my expectations.
February 12, 2013

Nice product for the money
You have to keep in mind when buying this that it is not a super high end product. If you expect to snap your fingers and 100G of RODI water to just magically appear, this isn't the item for you. However, it you take it in perspective - for the price you pay for it, this product is pretty great. I get more than the quoted 50G per day (and I have really bad water to start out with) and my TDS meter reads 0 on output. You have to make sure that you replace the filters a lot to keep the membrane clean, and use it at least once or twice a month... other than that - it's pretty darn efficient. My fish look healthier, my water is way more stable, and I haven't had a single problem tank wise since we got it. (I had MAJOR problems constantly before!) I really think it's worth it for anyone who is serious about their tanks to get a RODI maker.
Also - get the FOUR STAGE! It's worth the extra money, especially if you water isn't that great to start out with!
January 29, 2013

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Answers

Mine had this problem because the seal on the membrane cartridge got distorted/misaligned - water gushed out of the red waste hose and practically nothing came out of the blue product hose. Remove the membrane cartridge (the horizontal one on top). The black seal is held in place with a thin white plastic sleeve and the seal probably came out of the sleeve. Carefully work the thin part of the black seal back underneath the white sleeve, all the way around. Something like a toothpick might help, but be careful not to tear the sleeve or the seal. I think I put a very thin coat of Vaseline on the outer part of the seal before re-installing the cartridge, and I found that turning the membrane while pushing it in slowly worked well - it's a very tight fit. Turning helps to keep the seal from distorting.

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It produces water at a much slower rate---than what? Your unit should produce 1 gallon per hour, if you have met the optimum water pressure requirements that your unit is designed to operate within. Less pressure, slower production. Waste water from a RO/DI unit is a fact of life. If you believe yours is excessive, contact the manufacture and inquire as to what it should be. If you have no leaks, and are producing RO/DI water along with waste water, then you have it hooked up correctly.

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Answers

Answer:

It comes with a nylon faucet adapter, but the fine threads on the faucet side of the nylon adapters strip pretty easily. There will be a lot of back pressure from the RO membrane too, so it would be wise to take the nylon adapter to a home supply/hardware store and say, "I want one of these in brass." Then just use that adapter and use the unit right at the sink.

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You can keep it in your shack until needed and does not have to be hooked up the whole time. Quite portable actually. Just make sure to run the membrane at least 30 days to prevent shortage of lifespan. Of not being used for more than 30 days make sure to refrigerate the membrane. Don't ever let it gets dry.

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Yes, you can attach directly to the faucet, and unattach it when not in use. However, the faucet adaptor that comes with the unit is cheap plastic, so you'll need to buy another one from the local hardware store. Otherwise, it's a great unit.

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Answers

Answer:

Mine had this problem because the seal on the membrane cartridge got distorted/misaligned - water gushed out of the red waste hose and practically nothing came out of the blue product hose. Remove the membrane cartridge (the horizontal one on top). The black seal is held in place with a thin white plastic sleeve and the seal probably came out of the sleeve. Carefully work the thin part of the black seal back underneath the white sleeve, all the way around. Something like a toothpick might help, but be careful not to tear the sleeve or the seal. I think I put a very thin coat of Vaseline on the outer part of the seal before re-installing the cartridge, and I found that turning the membrane while pushing it in slowly worked well - it's a very tight fit. Turning helps to keep the seal from distorting.

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Thank you for your question. It is normal for there to be more waste water then purified water. The product water to waste water ratio for the Coralife Pure-Flo II 24 gpd 3-stage RO Unit is 1 to 3. If you have any other questions, please contact our Customer Service Department at 1-800-443-1160 or email at CustomerService@FosterandSmithAquatics.com

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Answers

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The size of the RO Unit is based on how much out put it can do in one day, when it says 50 gpd it means Gallons per day, it takes 45 minutes to get 5 gallons of RO water from a 50 gpd unit, if you want it faster then get a unit that can handle a larger out put.

I have a 75 gallon fresh water tank and a 150 gallon salt water reef tank, I have the 50 gpd RO unit and store the RO water in a 35 gallon trash can out side.I hope this helps.

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The math for this is fairly simple. The 24gal/day model would produce a total of 168 gallons over a period of one week. Which means that you could completely change your tank water 2 1/4 times.

But of course that is silly ... if you have a well balanced aquarium you only need to do a 10-30% (7.2 - 24gals) water change per week. So one day's output of the 24gal/day model should provide you with all the water you could possibly use! (Even if you had 7 of those large tanks you wouldn't run out of RO water.)

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Description:
Control water production on RO units and reservoir
tanksHelps save RO membrane life and prevents overflowsWorks automatically set float valve to desired water level Shut off water production automatically on RO units and gravity fed top off systems. Saves ...